finishing.com -- The Home Page of the Finishing Industry
A website for Serious Education, promoting Aloha,
& the most FUN smiley you can have in metal finishing

HomeFAQsBooksHelpWantedAdvertiseForum
topic 12032

Inline Testing of Fluoride


 

I am looking for a way of inline testing of incoming waste waters for fluoride. My waste treatment operators get slugs of waste from the hydrofluoric etching operation, we are looking for an indicator to tell them they have a problem.

Rick Stinnett
consumer electronics - Marion, Indiana, USA


 

Rather than trying a hardware solution, such as fluoride selective electrodes (an automated system could run big $$$) why not just get the people dumping the concentrates to let you know when they are going to do it?

bill vins
Bill Vins
microwave & cable assemblies
Mesa (what a place-a), Arizona 


 

It sounds like you may need a larger equalization tank! If that is not possible, then there are a couple of ways to get the alarm/notice you are looking for. The simplest and cheapest way is to install (fluoride resistant) conductivity sensor in your waste line. Any spikes will also have a much higher conductivity.

There are also two manufacturers of Fluoride analysers that can work over a very large concentration range and are in daily use at many semiconductor companies.

Lyle Kirman
consultant - Cleveland, Ohio



This public forum has 60,000 threads. If you have a question in mind which seems off topic to this thread, you might prefer to Search the Site

ADD a Q or A to THIS thread START a NEW THREADView This Week's HOT TOPICS

Disclaimer: It's not possible to diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & Devices


©1995-2017 finishing.com     -    Privacy Policy
How Google uses data when you visit this site.